tonsillitis

noun

ton·​sil·​li·​tis ˌtän(t)-sə-ˈlī-təs How to pronounce tonsillitis (audio)
: inflammation of the tonsils

Examples of tonsillitis in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
He was allegedly diagnosed with tonsillitis — inflammation of the tonsils — and prescribed oral antibiotics. Cara Lynn Shultz, People.com, 15 Aug. 2025 However, the record in question made no mention of tonsillitis. Beatrice Nolan, Fortune, 20 July 2025 This abscess is typically a complication of tonsillitis and usually forms adjacent to the tonsils. Anju Goel, Verywell Health, 26 Apr. 2025 See All Example Sentences for tonsillitis

Word History

Etymology

New Latin

First Known Use

1801, in the meaning defined above

Time Traveler
The first known use of tonsillitis was in 1801

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Cite this Entry

“Tonsillitis.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/tonsillitis. Accessed 9 Sep. 2025.

Kids Definition

tonsillitis

noun
ton·​sil·​li·​tis ˌtän(t)-sə-ˈlīt-əs How to pronounce tonsillitis (audio)
: inflammation of the tonsils

Medical Definition

tonsillitis

noun
ton·​sil·​li·​tis ˌtän(t)-sə-ˈlīt-əs How to pronounce tonsillitis (audio)
: inflammation of the tonsils and especially the palatine tonsils typically due to viral or bacterial infection and marked by red enlarged tonsils usually with sore throat, fever, difficult swallowing, hoarseness or loss of voice, and tender or swollen lymph nodes

More from Merriam-Webster on tonsillitis

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